Development of a Supervision/Control Interface for an Experimental Wind-Storage-Grid-Diesel Microgrid System

Abstract

Wind energy source with storage system coupled to diesel or grid offers a promising prospect for covering the fundamental needs of power without interruption. In this context, this study proposes and demonstrates an energy management, operation and control concepts of the micro-grid system (wind-storage-diesel-grid) in both stand-alone and interconnected mode in Bouzareah (Algeria). The micro-grid system is composed by two wind turbines, storage system, diesel generator and grid. In order to ensure an optimum exploitation of the produced energy without interruption, a novel power management algorithm is developed to control the different energy flows exchanged among the system components. This algorithm supervises the batteries state of charge and determines which source ensure the continuous supply of the installation by favoring wind energy. The instantaneous simulation of the micro-grid system with the proposed algorithm of the energy supervision algorithm are carried out by new graphical interfaces developed by using the MATLAB package. These interfaces facilitate the simulation and display the different curves describing the micro-grid system behavior. Therefore, the developed control software is open source in order to implement different intelligent techniques.The obtained results indicate that the developed control strategies provide good installation autonomy.